压实膨润土的导热特性研究
Study on the Thermal Properties of Compacted Bentonite
作者: 王 哲 :西南科技大学,核废物与环境安全国防重点学科实验室,四川 绵阳 中国科学技术大学,地球与空间科学学院,安徽 合肥; 李海峰 :四川建筑职业技术学院,四川 德阳;
关键词: 高放废物; 膨润土; 导热特性; 预测; High-Level Radioactive Waste; Bentonite; Thermal Properties; Prediction
摘要:Abstract: To analyze the relationship between dry density, water content, porosity, saturation and thermal properties, Hot disk thermal constants analyzer is used to measure the thermal properties of compacted Xinjiang Altay bentonite under different conditions. The test results of thermal conductivity are analyzed by several models. The experimental results show that thermal conductivity, thermal diffusivity and volumetric specific heat increase as the dry density and water content increase, and for the same water content, the thermal conductivity, thermal diffusivity and volumetric specific heat decrease as the porosity increase. When the saturation is more than 20%, exponential relationships between saturation and the thermal conductivity, thermal diffusivity, volumetric specific heat are observed respectively. By contrast, the equation obtained by experiments and Kahr’s model is more suitable for predicting the thermal conductivity of Xinjiang Altay bentonite.
文章引用: 王 哲 , 李海峰 (2015) 压实膨润土的导热特性研究 。 材料科学, 5, 158-167. doi: 10.12677/MS.2015.54022
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